n M I
I I I : I :
188 O E D E E — L E P I D O P T E R A . FAMILY—BOMBYCIDJI:. 189
posterior half of the left fore wing being masculine: the right hind wing- is female^ with a large yellow patch
near the outer angle^ and the left hind wiiig is female, with a yellow stripe extending from the diseoidal spot
to the outer margin, the outer angle of the mng, and two irregular spots between the angle and the anal edge
of the masculine colour.
FAMILY—NYMPHALIDIE.
S I D E E O N E ISIDORE.
PLATE XS5V, Fios. 6, 7.
Mr. Hewitson possesses a curious specimen of this Brazilian species here figured. The ordinary character
of the male is shewn on the left side of figure 6, and the corresponding side (that is, the right side) of the under
surface shewn in fig. 7. The wings of the female are pale bufl", slightly darker at the base, with a broad black
apical spot in the fore wings. In this ses the outer angle of the hind wing is more prominent than in the
male, the inner margin of the hind wing being shorter than in the male. In :Mr. Hewitson's specimen the two
wings on the left side and the hind wing on the right side are maseuKne (except that the latter has a female
coloured spot in the middle of the costal region, w-hieh is more conspicuous on the under side of the hind -n^ing).
The right fore wing, however, presents on its upper surface a complete melanije of the colom-s of the two sexes ;
the base, however, being masculine; whereas the under surface of this wing offers no distinction from the ordinary
under side of the male.
FAMILY—SATYRID.E.
H I P P A E C H I A 8EMELE.
PLATE 5XXV, FIG. 13.
I n Mr. P. Bond's fine Collection is preserved a specimen of this common British species, which in size and
general appearance, as well as in the structure of the fore legs, is a male insect, but of which the left fore wing
does not exhibit the peculiar male rugose portion of the disc to its full extent^, whilst the apical portion is
marked as in the female.
Mr. F. Bond also possesses a male specimen of this species, with the apical half of all the wings marked as
in the female.
FAMILY—MORPHID/E.
I n Mr. Hewitson's Collection is preserved a specimen of Morplto Sulhowskyi Koll. (ill. Ganymede, Westw.
Gen. D. Lep.), in which the fore and hind wing on the right side, and the fore wing on the left side, are masculine.
The left hind mng, however, on the upper surface has two-thirds of the basal portion blue, but not quite
so brilHant as the right fore m n g ; the apical one-third of the wing (as far as and including the ocelli, as seen
through the wing) is pale brown, with two narrow subapical bands not at all lunulate ; the anal patch is as in
the male, but much more diffused wi th brown ; the black and red markings as in the male.
On the under surface the left fore wing is throughout more strongly marked with darker brown, and the
ocelli are rather larger than in the opposite hind wing.
' In this species the gi-eater portion of the disc of the wing is covered with ordinary shaped oval scales, which are
affixed to the wmg in little cups placed trausrersely in rows at equal distances apart; but in the rugose portions of the
fore wings, characteristic of the male, the membrane of the wing is covered quite irregulariy with a vast number of the
small cups, the characteristic male scales or plumules (as they are termed by microscopists) occurring in these parts in
vast numbers. These j>lumules are either of a vei-y elongated oval form, or are almost linear, with the surface, however striated,
and the apex terminating in a small tuft of very fine bristles. These scales are implanted in the cups by a minute bulbous
base, from which extends a short extremely slender cylindrical portion. Although, however, occurring in such vast
numbers, these scales are not observed when the insect is at rest, or dried in a cabinet, the roughness which is observed
in those parts of the wings being produced by usual oval scales implanted amongst them, sticking out as if thrust upwards
by the dense mass of male plumules beneath.
FAMILY—LYCIENIDIE.
POLYOMMATUS ADONIS. PLATE XXSV, FIG. 5.
I n Mr. P. Bond's Collection is a specimen of this pretty insect which, on the under side, has entirely the
appearance of a female individual: on the upper surface, also, the two wings on the right side, and the hind
wing on the left side, are female; but the fore wing is dashed, especially on the anterior half of the wing, with
longitudinal stripes of the brilliant blue colour of the male.
L E P I D O P T E E A HETEROCERA.
FAMILY—BOMBYCIDYE.
LASIOCAMPA QTJERCUS. PLATE XXXV, PIG. 14.
The specimen here figured is contained in the Collection of Herr Staudinger, of Dresden, and exhibits a
curious mixture of both, sexes, the fore wing on the right side alone being imisexual and of the enlarged female
size and colour; the anterior half of the fore wing, on the left side, is also coloured as in the female; but this
wing is small in size, as in the male, and the hind half is curiously mottled with the darker and lighter colours
of the two sexes ; the red brown not so dark as in ordinary males; the left hind wing has the costal one-third
of the pale female colour, the inner two-thirds being of the richer colour of the male, with two large pale oval
diseoidal spots; the hind wing, on the right side, has the outer two-thirds of the wing coloured as in lightcoloured
males, with four pale submarginal spots ; the inner one-third is of the pale colour of the female, but with
a red-brown spot opposite the extremity of the body. The antennge are shorter and not so much pectinated as
in the male; the thorax and base of the abdomen are broad as in the females, but the abdomen is small, conical,
and shorter than in the male.
Mr. P. Bond also exhibited at the February meeting of the Entomological Society of London, 1868, another
specimen of Zasiocampa quercns, with the wings irregularly coloured, with the antennse also apparently irregulai
ly sexual.
M. Guenee has also described and figured a specimen of the same species iu a memoir, recently published,
upon certain Lepidoptera in the Museum of Geneva (pi. annex, fig. 8, with details), which exhibits a curious
mixture of sex;ual characters. The two wings on the right side, the hind wing on the left side (except a narrow
pale streak extending from the middle of the disc to the outer margin), and the inner half of the fore wing on
the left side, are apparently those of the male ; but the anterior or costal half of the left fore wing is enlarged
and pale colom-ed, as in the female. The body is thick, as in the female; the antennaj are intermediate in
structure between those of the two sexes ; and the abdomen was found to contain imperfectly developed eggs—
the outer organs of generation being also imperfect.
O l i D E R - N E U R O P I E R A . FAMILY—LIBELLULIDYE.
CxU:.EPTEKYX VIRGO. PLATE XXXV, FIG. 15.
Mr. M^Lacblan has kindly allowed me to figure from his collection a French specimen of this common
insect partaking of the markings of the two sexes. The body is green, with the wings very slightly greenishhyaline
; the anterior on the right side only shghtly and irregularly marked along the middle of the inner portion
with brown spots; whilst the anterior wing on the left side bears a very large dark blue oval patch as iu
the ordinary males. The two hind wings are rmicolorous.
The extremity of the abdomen has been much injured by having a wire passed up the body, the eighth or
terminal segment alone exhibiting small black horny conical points.